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Sparganium emersum
Also called Unbranched Bur-reed, Small Bur Reed, Emersed Burreed, Green Fruited Burreed, Unbranched Burreed
Sparganium emersum is a species of flowering plant in the cat-tail family known by the common names European bur-reed and unbranched bur-reed. It has a circumboreal distribution, occurring throughout the northern latitudes of Eurasia and North America. It is an aquatic plant, growing in shallow water bodies such as ponds and streams. It can become abundant at times. It is a perennial herb producing a floating stem up to 2 meters long. The leaves may be limp and floating or stiff and erect, emerging above the water surface. The leaves are flat and straplike, sometimes with a triangular, keeled base that can help distinguish it from the similar Sparganium angustifolium. It is monoecious, individual plants bearing both male and female inflorescences.
American bur-reed · Narrowleaf bur-reed · Simplestem bur-reed · Broadfruit bur-reed · Floating bur-reed · Clustered bur-reed · Sparganium gramineum · Small bur-reed · Bur-reed
Text excerpted from the Wikipedia article Sparganium emersum by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
